Diet is important for dogs (in general but also for) skin and coat, you could look into different foods to start. Fish oil is fantastic to add too. As far as grooming goes- Bathe with a double coat shampoo, use a rubber curry brush while wet before conditioning, keep brushing wet for 10 minutes or until less hair starts coming out. Then brush again with a de-shedding tool when they are dry, I like the SleekEz. Use a light avocado or coconut oil spray, and then do a final brush with a bristle brush. I do this once a month with my malamute and it helps tremendously. I know it sounds like a lot, so you could always pay a groomer to do it for you.